Saya memiliki router wlan Linksys yang diatur sebagai titik akses. Ini terhubung melalui kabel ke router utama kami (dan server DHCP) yang terhubung ke internet. Lampu indikator koneksi kabel menyala, di kedua ujungnya.
Menggunakan Kubuntu 9.04, NetworkManager dan knetworkmanager dan nm-applet, sepertinya saya tidak dapat terhubung ke jaringan. Koneksi wlan "fisik" berfungsi, tetapi macet di DHCP.
Sep 23 00:40:48 bart-laptop NetworkManager: <info> Activation (wlan0) Beginning DHCP transaction.
Sep 23 00:40:48 bart-laptop dhclient: Internet Systems Consortium DHCP Client V3.1.1
Sep 23 00:40:48 bart-laptop dhclient: Copyright 2004-2008 Internet Systems Consortium.
Sep 23 00:40:48 bart-laptop dhclient: All rights reserved.
Sep 23 00:40:48 bart-laptop dhclient: For info, please visit http://www.isc.org/sw/dhcp/
Sep 23 00:40:48 bart-laptop dhclient:
Sep 23 00:40:48 bart-laptop dhclient: wmaster0: unknown hardware address type 801
Sep 23 00:40:48 bart-laptop NetworkManager: <info> dhclient started with pid 31223
Sep 23 00:40:48 bart-laptop NetworkManager: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) complete.
Sep 23 00:40:48 bart-laptop NetworkManager: <info> DHCP: device wlan0 state changed normal exit -> preinit
Sep 23 00:40:48 bart-laptop dhclient: wmaster0: unknown hardware address type 801
Sep 23 00:40:48 bart-laptop dhclient: Listening on LPF/wlan0/00:21:6a:16:0c:50
Sep 23 00:40:48 bart-laptop dhclient: Sending on LPF/wlan0/00:21:6a:16:0c:50
Sep 23 00:40:48 bart-laptop dhclient: Sending on Socket/fallback
Sep 23 00:40:48 bart-laptop dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 6
Sep 23 00:40:54 bart-laptop dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 13
Sep 23 00:41:07 bart-laptop dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 15
Sep 23 00:41:22 bart-laptop dhclient: DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 12
Sep 23 00:41:34 bart-laptop NetworkManager: <info> Device 'wlan0' DHCP transaction took too long (>45s), stopping it.
Sep 23 00:41:34 bart-laptop NetworkManager: <info> wlan0: canceled DHCP transaction, dhcp client pid 31223
Sep 23 00:41:34 bart-laptop NetworkManager: <info> Activation (wlan0) Stage 4 of 5 (IP Configure Timeout) scheduled...
Sep 23 00:41:34 bart-laptop NetworkManager: <info> Activation (wlan0) Stage 4 of 5 (IP Configure Timeout) started...
Sep 23 00:41:34 bart-laptop NetworkManager: <info> (wlan0): device state change: 7 -> 9
Sep 23 00:41:34 bart-laptop NetworkManager: <info> Activation (wlan0) failed for access point (VanHeukelom2)
Sep 23 00:41:34 bart-laptop NetworkManager: <info> Marking connection 'Auto VanHeukelom2' invalid.
Sep 23 00:41:34 bart-laptop NetworkManager: <info> Activation (wlan0) failed.
Sep 23 00:41:34 bart-laptop NetworkManager: <info> Activation (wlan0) Stage 4 of 5 (IP Configure Timeout) complete.
Sep 23 00:41:34 bart-laptop NetworkManager: <info> (wlan0): device state change: 9 -> 3
Sep 23 00:41:34 bart-laptop NetworkManager: <info> (wlan0): deactivating device (reason: 0).
Menggunakan Wireshark, saya melihat bahwa permintaan DHCP dikirim, tetapi tidak ada jawaban yang diterima.
Saya memiliki router lain yang diatur sebagai titik akses, juga terhubung ke router utama melalui kabel, dan itu berfungsi dengan baik. Ini jaringan yang sama, server DHCP yang sama. Saya juga bisa terhubung ke AP yang sekarang tidak berfungsi di masa lalu.